Installing A Memory Module - IBM X3610 Installation Manual

Installing a memory module

The following notes describe the types of dual inline memory modules (DIMMs) that
the server supports and other information that you must consider when installing
DIMMs:
v The server supports up to 6 registered 512 MB, 1 GB, 2 GB, and 4 GB DDR2
v The server comes with a minimum of one 512 MB DIMM, in DIMM connector 1.
v Each DIMM in a pair must be the same size, speed, type, and technology to
v When you install or remove DIMMs, the server configuration information
DIMMs, for a maximum of 16 GB of system memory. See http://www.ibm.com/
servers/eserver/serverproven/compat/us/ for a list of memory modules that you
can use with the server.
Note: Because some memory is reserved for system operation, the actual
usable memory size that is reported by the operating system is less than the total
installed size.
When you install additional DIMMs, you must install the DIMMs in the order
shown in the following tables, to maintain performance.
Table 2. DIMM installation sequence, non-interleaved
DIMM DIMM connectors
1st 1
2nd 3
3rd 5
Table 3. DIMM installation sequence, interleaved
DIMM pair DIMM connectors
1st 1 and 2
2nd 3 and 4
3rd 5 and 6
ensure that the server will operate correctly.
changes. When you restart the server, the system displays a message that
indicates that the memory configuration has changed.
DIMM 5
Channel 1
DIMM 3
DIMM 1
DIMM 6
Channel 0
DIMM 4
DIMM 2
Chapter 2. Installing optional devices
13